Q. Under which of the following conditions will there be no change in the reading frame of following mRNA ? 5'AACAGCGGUGCUAUU3'
A) Insertion of G at 5th position
B) Deletion of G from 5th position
C) Insertion of A and G at 4th and 5th positions respectively
D) Deletion of GGU from 7th, 8th and 9th positions
Explanation
[Solution] Deleting three consecutive bases (one codon) removes one amino acid but leaves the reading frame unchanged. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.